Uhligia (cephalopod)
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''Uhligia'' is a genus of Lower Cretaceous (
Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 129.4 ± 1.5 Ma (million years ago) and 121.4 ± 1.0 Ma). It is a subdivision of the Early Cretaceous Epoch (or Lower Cretaceous Series). It is preceded ...
) ancylocerid ammonoid cephalopods initially found in Germany. ''Uhligia'', named by Koenen, 1904, has the general form characteristic of
heteromorph The Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and bec ...
ancyloceratids. The early part is more or less straight, then sharply bent, followed by a second straight shaft and a final hook. Ribs are fine, weak, and irregular, lacking tubercles; slanted in the early part, straight in the later. ''Uhligia'' differs from genera like ''
Ancyloceras ''Ancyloceras'' is an extinct genus of heteromorph ammonites found throughout the world during the Lower Cretaceous, from the Lower Barremian epoch until the genus extinction during the Lower Aptian.Sepkoski, JacSepkoski's Online Genus Database â ...
'' and ''
Aspinoceras ''Aspinoceras'' is an extinct genus of heteromorph ammonites that lived during the Early Cretaceous. The shell small; starts off with a few loosely wound whorls not in contact followed by a short moderately curved shaft ending in a broad hook. ...
'' in lacking the open coil in the early stage.


References

* Arkell, et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L. (Ammonoidea). Geol Soc of America and Univ Kansas Press. p. L211. Ammonites of Europe Ancyloceratoidea Ammonitida genera Cretaceous ammonites {{Ammonitida-stub